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It Is Not Always Good to Be Large; Some Female Fitness Components in a Temperate Digger Wasp, Bembix rostrata (Hymenoptera: Sphecidae)
Folke K. Larsson and Jan Tengö
Journal of the Kansas Entomological Society
Vol. 62, No. 4 (Oct., 1989), pp. 490-495
Published by: Kansas (Central States) Entomological Society
Stable URL: http://www.jstor.org/stable/25085125
Page Count: 6
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The hypothesis of fecundity advantages for large females was tested in one of the northernmost populations of the digger wasp Bembix rostrata during a 4 year study in Sweden. In this K-selected species, females normally produce a maximum of four to five unicellular nests during their lifetime. In 2 out of 4 years, larger females needed longer time to complete a nest than smaller females. In addition, larger females were not found to live longer than smaller females, indicating that female body size in some years is negatively correlated with fecundity.
Journal of the Kansas Entomological Society © 1989 Kansas (Central States) Entomological Society